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yasuhirokimura-db18/docs/csharp/html/Properties_T_BerkeleyDB_HeapDatabaseConfig.htm
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Yasuhiro KIMURA 923a4cd4e6 Update to 18.1.32
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<html xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:mshelp="http://msdn.microsoft.com/mshelp" xmlns:ddue="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:msxsl="urn:schemas-microsoft-com:xslt"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" /><META NAME="save" CONTENT="history" /><title>HeapDatabaseConfig Properties </title><link rel="stylesheet" type="text/css" href="../styles/presentation.css" /><link rel="stylesheet" type="text/css" href="ms-help://Hx/HxRuntime/HxLink.css" /><script type="text/javascript" src="../scripts/EventUtilities.js"> </script><script type="text/javascript" src="../scripts/SplitScreen.js"> </script><script type="text/javascript" src="../scripts/Dropdown.js"> </script><script type="text/javascript" src="../scripts/script_manifold.js"> </script><script type="text/javascript" src="../scripts/script_feedBack.js"> </script><script type="text/javascript" src="../scripts/CheckboxMenu.js"> </script><script type="text/javascript" src="../scripts/CommonUtilities.js"> </script><meta name="container" content="BerkeleyDB" /><meta name="file" content="Properties_T_BerkeleyDB_HeapDatabaseConfig" /><meta name="guid" content="Properties_T_BerkeleyDB_HeapDatabaseConfig" /><xml><MSHelp:Attr Name="AssetID" Value="Properties.T:BerkeleyDB.HeapDatabaseConfig" /><MSHelp:TOCTitle Title="HeapDatabaseConfig Properties " /><MSHelp:RLTitle Title="HeapDatabaseConfig Properties (BerkeleyDB)" /><MSHelp:Keyword Index="A" Term="Properties.T:BerkeleyDB.HeapDatabaseConfig" /><MSHelp:Keyword Index="A" Term="frlrfBerkeleyDBHeapDatabaseConfigPropertiesTopic" /><MSHelp:Keyword Index="K" Term="HeapDatabaseConfig class, properties" /><MSHelp:Attr Name="DevLang" Value="CSharp" /><MSHelp:Attr Name="DevLang" Value="VB" /><MSHelp:Attr Name="DevLang" Value="C++" /><MSHelp:Attr Name="Locale" Value="en-us" /><MSHelp:Attr Name="TopicType" Value="kbSyntax" /><MSHelp:Attr Name="TopicType" Value="apiref" /><MSHelp:Attr Name="AssemblyVersion" Value="18.1.32.0" /></xml></head><body><input type="hidden" id="userDataCache" class="userDataStyle" /><input type="hidden" id="hiddenScrollOffset" /><img id="collapseImage" style="display:none; 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</td></tr></table><table id="gradientTable"><tr><td class="nsrBottom" background="../icons/gradient.gif" /></tr></table></div><div id="mainSection"><div id="mainBody"><div id="allHistory" class="saveHistory" onsave="saveAll()" onload="loadAll()" /><span style="color: DarkGray"> </span><p>The <a href="T_BerkeleyDB_HeapDatabaseConfig.htm">HeapDatabaseConfig</a> type exposes the following members.</p><h1 class="heading"><span onclick="ExpandCollapse(propertyTableToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(propertyTableToggle, event)" tabindex="0"><img id="propertyTableToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Properties</span></h1><div id="propertyTableSection" class="section" name="collapseableSection" style=""><table id="memberList" class="members" frame="lhs" cellpadding="2"><col width="10%" /><tr><th class="iconColumn">
 
</th><th class="nameColumn">Name</th><th class="descriptionColumn">Description</th></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_HeapDatabaseConfig_BlobThreshold.htm">BlobThreshold</a></td><td><div class="summary">
Deprecated. Replaced by ExternalFileThreshold.
</div></td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_DatabaseConfig_EncryptAlgorithm.htm">EncryptAlgorithm</a></td><td><div class="summary">
The algorithm used to perform encryption and decryption.
</div> (Inherited from <a href="T_BerkeleyDB_DatabaseConfig.htm">DatabaseConfig</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_DatabaseConfig_Encrypted.htm">Encrypted</a></td><td><div class="summary">
Encrypt the database using the cryptographic password specified by
<a href="M_BerkeleyDB_DatabaseConfig_SetEncryption.htm">DatabaseConfig.SetEncryption</a> or
<a href="M_BerkeleyDB_DatabaseEnvironmentConfig_SetEncryption.htm">DatabaseEnvironmentConfig.SetEncryption</a>.
</div> (Inherited from <a href="T_BerkeleyDB_DatabaseConfig.htm">DatabaseConfig</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_DatabaseConfig_EncryptionPassword.htm">EncryptionPassword</a></td><td><div class="summary">
The password used to perform encryption and decryption.
</div> (Inherited from <a href="T_BerkeleyDB_DatabaseConfig.htm">DatabaseConfig</a>.)</td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_HeapDatabaseConfig_ExternalFileThreshold.htm">ExternalFileThreshold</a></td><td><div class="summary">
The size in bytes which is used to determine when a data item
will be stored as an external file.
<p>
Any data item that is equal to or larger in size than the
threshold value is automatically stored as an external file.
</p><p>
If the threshold value is 0, external files are never used by the
database.
</p><p>
It is illegal to enable external file support in the database which
is configured as in-memory database or with duplicates,
sorted duplicates, compression, multiversion concurrency control
and transactional read operations with degree 1 isolation.
</p></div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_HeapDatabaseConfig_MaxSizeBytes.htm">MaxSizeBytes</a></td><td><div class="summary">
The bytes component of the maximum on-disk database file size.
</div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_HeapDatabaseConfig_MaxSizeGBytes.htm">MaxSizeGBytes</a></td><td><div class="summary">
The gigabytes component of the maximum on-disk database file size.
</div></td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_DatabaseConfig_PageSize.htm">PageSize</a></td><td><div class="summary">
The size of the pages used to hold items in the database, in bytes.
</div> (Inherited from <a href="T_BerkeleyDB_DatabaseConfig.htm">DatabaseConfig</a>.)</td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_HeapDatabaseConfig_RegionSize.htm">RegionSize</a></td><td><div class="summary">
The number of pages in a region of the database. If this value is
never set, the default region size for the database's page size is
used. You can set the database page size using
<a href="P_BerkeleyDB_DatabaseConfig_PageSize.htm">PageSize</a>.
If the database already exists, this value is ignored. If the
specified region size is larger than the maximum region size for the
database's page size, an error is returned when
<a href="M_BerkeleyDB_Database_Open.htm">Open(String, DatabaseConfig)</a> is called. The maximum allowable region
size is included in the error message.
</div></td></tr></table></div><h1 class="heading"><span onclick="ExpandCollapse(seeAlsoToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(seeAlsoToggle, event)" tabindex="0"><img id="seeAlsoToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />See Also</span></h1><div id="seeAlsoSection" class="section" name="collapseableSection" style=""><div class="seeAlsoStyle"><a href="T_BerkeleyDB_HeapDatabaseConfig.htm">HeapDatabaseConfig Class</a></div><div class="seeAlsoStyle"><a href="N_BerkeleyDB.htm">BerkeleyDB Namespace</a></div></div></div><div id="footer"><div class="footerLine"><img width="100%" height="3px" src="../icons/footer.gif" title="Footer image" /></div><A NAME="feedback"></A><span id="fb" class="feedbackcss"> </span>
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